Person Based Reminders. Another breakout feature of Cortana is reminders on a whole new level. You can ask Cortana to remind you about something the next time you speak to any of your contact via your Windows Phone. And the medium can be any, a phone call or a text message.
Retain is defined as to keep, hold on to or keep in place. An example of retain is to keep a prized possession from childhood. An example of retain is for mouth-gear to keep the teeth in place. to hold or keep in possession.
A retainer is something that holds something else in place. After your braces are removed, a retainer keeps your teeth from moving out of their new perfect position. Professionals like lawyers or consultants are paid a retainer, which is a fee. The retainer ensures that they will be available to work for you when you need them. You will often pay an hourly rate on top of the retainer once the lawyer or consultant has worked enough hours for you to use up the retainer fee you paid.